Gear-tooth-rounding machine.



A. H. INGLE an A. 1. GOSSELIN.

GEAR TOOTH ROUNDING MACHINE.

APPLICATION FILED JULY 5.1912.

F .ltented Feb. 20, 1917.

5 SHEETSSHEET I.

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GEAR TOOTH wouwmwe MACHINE.

APPLICATION FILED JULY 5 1912- W Patented lab. 20, 1917'.v

5 SHEETSSHEET 2.

A. H] INGLE & A. I. GOSSELIN,

GEAR TOOTH nouwnme MACHINE.

APPLIVCATION'FILE'D JULY 5. 191E.

5 SHEETS-SHEET 5- lbw/102186 Home-Zah- Patented Feb. 20, 1917.

of Fig. 1;

UNITED STATES PATENT OFFICE.

ARTHUR IN 'GLE AND ALPHONSE J. GOSSELIN, OF ROCHESTER, NEW YORK, ASSIGN- OBS, BY MESNE ASSIGNMENTS, TO INGLE CORPORATION, C F MONROE COUNTY, NEW

YORK, A CORPORATION OF NEW YORK.

' GEAR-TOOTH-ROUNDING MACHINE.

Specification of Letters Patent.

Application filed July 5, 1912. Serial No. 707,? l1.

1 '0 (ZZZ whom it may concern:

lie it known that We, Ania-run l-l. lsenn and .hirnoxsr. J. (iosssmx, both of Rochester. in the ounty of Monroe and State of New York, ha \e invented certain new and useful Improrenients in Goar-Tooth-Rounding Machines; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the aceon'ipanj'ini drawings, forming a. part of this s wcilication. and to the refererco-nunnirals marked thereon.

The present invention relates to n'iaehines for roui'iding or chamfering the teeth of gears and especiallythosc used in transmission gearing; an object of the invention being to provide a construction which may be readily adjusted to operate on various types and sizes of gears, such as internal gears and external gears with and without shafts. To these and other ends the inven tion consists in certain improvements and conibinatioi'is of parts all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the sperilieation.

In the. drawings:

Figure 1 is a top View of a machine constructed in accordance with this invention,

with a shaftless gear in position thereon; Fig. 2 is a front View of the same ma chine;

Fig. 3 is a vertical section on the line a a of Figfl;

Fig. 4 is a vertical -'tion on the line'o-b Fig. 5 is a of Fi 1;

Fig.6 ailetail section on the line d-d of Fig. 1;

Fig'. 7 is a detail section on the line e-c of Fig. 2;

vertical section on the line c-o Fig. 8 is a. detail section on the line-f-f of Fig. 5;

Figs. 9 and 10 are respectively a horizontal section anila detail side view showi'ng an attacl'iment permitting the rounding of internal gears, and

Figs. 11 and 12 are detail views sl'ioigzing an attaehn'ient adapting the machine for op erating upon gears having integral spindles or shaft.

' the shaft projecl s.

Fig. 13 is a vie v showing part of the edge of a gear wheel, ti 1(- teeth of which are shown rounded as the r sult of the operations performed by the machine.

In carrying oit the invention, there is employed a suit lble work support and a suitable t'ool ho] :ler, the operations being, such that the get 1' or work piece is rotated at a certain speed while a relative movement between the work piece and the tool, during such. rotation ca lses the tool to travel in engagement with one face of a tootlnthence in contact with ill outer side or an end of the tooth and liially in contact with the opposite face of .he tooth. thus causing the roundrng or char itering of the tooth.

successive tooth, due to the rotation of the;

work piece is the :1 presented to the tool and is treated in the same manner and this is continued until ll of the teeth have been rounded or cham Fll'Oll to the proper degree on one side.

-V Vith the end in View of supporting the Work there may be employed a carriage 2, which, in this instance, is horizontally adjustable on the lop of a' main frame 1 means of coiipcrrting guides 3. The move ment of this rarr age may be etfectecl'in any suitable manner. but, in thls instance, there is employed a sci ew shaft 4 turning: idly on the frame 1 and cooperating with the nut 5 on the carriaga'f).

To rotatably support an external gear or work piece A. wi1hout a shaft, there-may be employed a shaft 6 projecting laterally from and turning in the carriage 2, the work piece A. being secured to the projecting por tion of the shaft. Preferably a nut 7 on the shaft clamps tln work piece against the sleeve 8 which is arranged on the shaft between the work piece and a flange or abutment 9 that also serves to prevent the axial movementof the shaft 6 within the rarriage 2. The shaft 6 is removable from the carriage 2 in order that the machine may.

operate upon other kind of work, as will be hereinafter described, this preferably-be ing effected by removing the nut 10 on that side of the carria eye 2 opposite. that in which Friction pieces 6 may engage'the shaft 3 to prevent the latter turning too freely, lhBSG friction pieces being The preferably forced against the shaft by screw plugs 6" closing lateral bores in the carriage to coiipera'te with the bearing in an arm 12.

The arm 12 is preferably removably supported on the carriage 2 and to thisend the latter is provided witli an extension 13 on one side having an inclined face 14 formed with an inverted T-groove 15. The base of the arm 12 cooperates with the inclined face 14 and isheld thereagainst by one or more bolts 16. The arm 12 is not only made removable for adapting the machine to operate upon another kind of work but it may be adjusted,longitudinally of the groove 15 for accommodating the machine to work pieccshaving teeth of different \vidth.

\Vith the object in view of rotating the work piece A a gear wheel or pinion 16 may be secured to the shaft 6 preferably being clamped between the sleeve 8 and a sleeve 8".

The diameter of this gear wheel varies according to the diameter of the gear wheel or work piece whose teeth are to be rounded and it is therefore termedan indexing gear. The indexing gear may be driven by an intermeshing gear 17 removably held by a nut 18 upon a shaft 19. The latter also projects from one side of the carriage 2 parallel with shaft 6 and has a number of sleeves 19 thereon. said sleeves being removable,

.23. vent|y' of the carriage 20-and preferably at the shaft 19 and may be movable on the'carriage 2 transversely of the shaft 6, in order that the gear wheel 17 may be brought to or moved away from the shaft 6 to drive. work pieces of different diameters. Preferably thev adjustment is effected by providing the top of the carriage 2 with T -grooves 21 .which receive the-heads of bolts 22 on the carriage 20.

. In order to drivethe shaft 19, the latter may be provided with worm wlieel23 which meshes with a worm 24 arranged to turn with and adjustable longitiulinally of and on a shaft 25, a casing 26 inc'losing the worm wheel and the worm and cooperating with the latter insuch a i'nanne'r that it is held in coiiperative relation with the worm wheel The shaft is supported independ- 'o'n-e end 'ona casting 27 which is firmly supportcd b' vand bolted to the frame 1.,

The casting 27 may also support the .drive .,shaft EZStowhich the drive pulley 29 'issecured, driving connection between the drive shaft 28 and itscounter shaft 25 being preferably established bymeans of a pinion 30 meshing, with the larger gear 31 on the shaft 25.

In order that. the worm wheel 23 will lie in firm engagement with the worm 24, the shaft 19 maybe carried by eccentric bearings 32 (see Fig. 6) which are mounted to turn in. the carriage 20 to move the worm wheel 23 toward or from the worm 24 and establish a proper co-engagement between tliem. Set screws 33 may be employed to engage a pin 33 for holding the eccentric bearings 32 in their adjusted positions.

For the purpose of properly or accurately setting the work piece with relation to the tool on the initial adjustment of the apparatus, the drive gear 17 has a slight adustment about its axis and relatively to the shaft 19. Prcferab1y..this is accomplished by providing a flanged hub 31 on the shaft 19 and securing the drive gear 17 to the front face of the hub by bolts 35 which operate in slots 36 in the gear 17. \Vhen the bolts are loosened, ascrew 37, arranged in the pocket 38 in the hub 34 may be turned in a nut 39 which is journaled at 40 in. the gear 17 so that the latter is caused to partake of the movement of the nut. The screw, not being permitted to move axially in the pocket. will cause a relative movement between the parts.

The tool B (see Fig. 9) is preferably in the form of a rotary milling cutter having its free end beveled and milled at :11 and its inner end engaging within an internally threaded split sleeve 43. This sleeve is axially adjustable within an enlarged bore 44 I of a hollowor tubular spindle or tool holder, the adjustment in this instance being effected by. a screw member preferably in the form of a screw rod 46 which operates. within the hollow spindle and engages the threads of the adjustable sleeve 43, in order to draw the cone shaped end 47 of the sleeve 43 into engagement with the flared end 48 of the spindle 45, thus compressing the split sleeve upon the tool B and holding.

the latter in its adjusted position v,in the sleeve. The screw rod 46 may be operated by a hand wheel 49 in order to project or to draw in the sleeve 43.

The rotary tool holder or spindle-15 turns ivithin bearings 50 on spaced standards 51; pulleys 52 being secured to the spindle 45 between the standards. The latter project up;

wardly from a table 53.1'otatabl'y supported on a carriage 54, preferably by means of an lntegral bctirmg 55 depending mto a socket in the upper surface of the carnage 5-1, bolts 56 being secured to the carriage and operat ing in slots 57 in the "table for the purpose of hoh ing the. table in adjusted position.

The ad ustment of the table on the carriage permits the .tool to rotate about a vertical axis transverse to and to one side of the axis tion oi the tool so that the tool may 7 i at an. angle to the plane of the to be operated upon by shifting the ear arrain d trans- .1 tion of the tool. a. may be employed for narration of the carriage. r 31 formed with a i tl'iereof, receiving l lever (31, the other d h r being pii'oted at which Y iii-nailed at M a rod. (J lin icrcw portion is possible by turning the roo l the arria rr l'i-lrelall. sly to the lever "35., thus varying: the ell'ectire lenggih oi the minim-(dingr rod and. shift ing the pcmition oil? the lool relatively to the the reeiprocaiion of the u: of the carriage is up; the length of 11d of lhe tooth t not, or in other words, iereby the length of the the tooth may be varied, bein gheld in. proper position by l l lit; to lIlT. it therotation lhe ailinstn'ient may also be uniployed "'t' the position of the earto /correspond with. the position of the it. ii:

for t v travel.

that the I'tii' and eoi'ise oently hose oi the tool may be varied in len th to corr pond in or-- den- ,to -operate on gears of diflerent sizes itlueiael my be provided a shiitable fulcrum for the douhie arni. lever (:11 Preferably a "pivot pin (38 is inljoetably supported in a slot till i oif'u'ied in a 'iiiracliet on the casting 2?. The lever (31 is also slotted at Tito 'iern'iit the pivot pin to be adjusted therein. so that. with the shortenii'ig of the length of one arm of the lever 61, the length of the otlior arm will be inereasech The n'iaehine may also bensed for roundinn or ehaini ering the teeth of internal gears Mi 9 and 10) and to rotatably supportsnel'a. groin-s, the shaft E3 and the bracket iii as first removed. A bracket 81 is then our d to one side oi. the carriage '12, the lat tirr pi .rably having; a way or groove 85 l'ormed thereon and a T-slot 86 forn'ied at we and of the any or groove 85. Projec tions 87 on the brathet 81 lit within the with a bolt. "l, serve to hold the brac (let in position on. the side oi: 'tlioacarriage.

The brael-zet may, he prowl.

. and the tool is roeations of the v groove or way 85') and a T-bolt 88, to ether work holc ing sleeve 91 turning therein. 'To hold the sleeve 91 within the sleeve 90, a shoulder l t one end of the sleeve 91 coiipcrates with one end of the bearii'ig sleeve 90. while a not 91 on the sleeve 91 cooperates n'ith the 0 pposite end of the sleeve 90. Friction pieces 90 engage the side of the sleeve 91 to prei ent too free rotation of the latter. said frict: 0n pieces being held'in pockets in the beam-ii g 90 by means of plugs W).

The not 94: may have formed thereon a bevel gea- 95 which meshes with a beveled JG timing on a headed stub shaft 97 that is b0 ted to the bracket 84-. Removabl'y secured tc the beveled gear 96 is an indexing; gear 98 which in turn meshes with a drive gear 17 in. the shaft ill. The drive gear 17 not adjustable on its shalt l as th rproper or accurate position of the work can be obtainml by turning the work piece 9:3 in the Hl.t'\'t ill. the slocvc receiving the shaft 92 if snob work piece. lo bold tbc work pieio againstlmrning in the slccvjo ill. the latter is split and. clamped upon the shaft 92 preferibly by screw bolts loo.

The In; chine may also be used. for rounding the teeth of those gear \vhecls having shafts connected thereto integrally or othcrwise. Tl is is accoinpl'ishml by the attach inent sho vn in Figs, 11 and 1:2. The shaft 6 and the lraeket 12 are removed the same as with the attachment shown in .l igs. i) and 10, and a bracket 101 vis attached to the. can riage E2 lhedatter preferably having away 102 (see Fig. to receive anarin 10? on the braelet 101, and the bracket being held to the ca 'riage 2 by means of bolts 104,- ontering op uiings 105 in the carriage E2.

Ari-an; ed on the bracket 101 and its arm ltlil are Ipports-LOU and 10?, said supports being I'UiPCL'tlYQlV adjustable on ways 10S by means of a screw rod '112,.bein,g held against-t.lrnlng in. its support by screw 113 working .n a groove 11!.- in the pin 111. The work pitoe llfi-is-supported by and turns upon tin centering pins and 111, the gear. poi'tion 116. intcrineshing with the drive gerr 17, thus dispensing with an indexing gear. U! course, with this construetion the carriage 20 is adjusted so that it lies near the end of the carriage 2, thisbeing necessary owing: to the factthat the work SllPPOltWll'llS about an axis beyond the end of the or rriage Q.

The operation of the lIliHilllIlOWill be un derstood from the foregoing description but; it maybe.sun'in'iarized as follows: A ssun'n ing that it is desired to round the teeth of a gear, S\1(l1 as shown in Fig. 1 in which the gear A .s not provided with a permanent j The bracket arm 12 is then fitted to the extreme end of the shaft to support the latter against vibrations and the carriage 2 is adjusted so that the tool, when reciprocated transversely of its axis. will operate on the teeth of the gear A. The 'arriage 20 is adjusted so that the gear 17 meshes with the gear 16 and if the gear A is not accurately engaged by the tool B. the gear 17 is rotated upon its axis relatively to its shaft 19. The connecting rod 65 is turned so that the tool B but slightly engages the teeth of the work piece in order that upon the starting the machine the work piece or gear A will rotate and the tool will reciprocate trans versely of its axis. causing the rounding of one side of each tooth. After a complete rotation of the work piece A has taken place. the, connecting rod (55 is rotated so that the tool will take off still further material from the teeth of the wheel A and this is continued until the proper amount of material has been removed from the teeth.

For rounding the teeth of internal gears, the shaftG and the bracket arm 12 are removed. .lo the front of the carriage 2 the bracket 8% is secured, (see Figs. 9 and 10) so that the axis of rotation of the worksupporting sleeve 91 is parallel withthe axis of rotation of the tool B, the sleeve being geared to the shaft 19 by a gearing which corresponds to the diameter of the internal gear. \Vith this attachment. the tool reciprocates transversel) of its axis and transversely of the axis of rotation of the work piece, so that the tool passes from one face of the tooth. to the next about the end of the tooth, mama] of the side, as when the machine isjadjustcd as in l ig. l. The result. however, is the same in both instances, that 1 I 1s, the. teeth are rounded or chamfered to facilitate meshing.

lVith the attachment shown in Figs' 11 and 12 the shaft 6 and the bracket arm 12 are removed and the bracket 101 secured to the carriage This bracket properly sup-,

ports a gear wheel and its shaft in position to be driven by the shaft 19 The operation of the tool on the work piece or gear is sub therehas been provided a gear tooth roundin machine ada ited for o eration u on gears of various types and sizes, attachments being-provided for operatively supporting internal gears in'position to be operated upon by the tool and attachments also being provided for the mounting of external gears with or without shafts in positions to be acted upon by the tool. The operation of the machine is simple and the construction of the parts thereof is such that durability and rigidity are secured.

\Ve claim as our invention: 1..In a gear tooth rounding machine, the combination with arotary tool and means for reciprocating it, of means for rotatably supporting a work piece in front of the tool, a drive gear operatively connected with said supporting means and located in front of the work piece for imparting rotary movement thereto, a shaft supporting said drive gear and a support therefor adjustable toward and from both the work piece and tool.

. 2. In a gear tooth rounding-machine, the

combination with meansfor rotatably sup-' portlng a work piece, a tool located at one side thereof and means for reciprocating it,

of a drive gear operatively connected with said supporting means and positioned at the opposite side of the work piece, a shaft rotating the drive gear operatively connected to the tool reciprocating means, and a support for the drive gear shaft movable toward and from both the work piece and tool.

3. In a gear tooth rounding or chamfering machine, the combination with a tool, means for supporting a work piece or gear in cooperative relation with the tool, and means for reciprocating one of said parts relatively to the other. of a carriage adjustable relatively to the tool, a shaft on said carriage, a gear whee-l on-the shaft for driving the gear to be operated on by the tool. a worm wheel on said shaft. a worm carried by the carriage and cooperating with the worm wheel. and a shaft supportedindependently of the carriage and having the worm turning therewith andadjustable longitudinally thereof.

t. In a gear toot-h rounding or chamfering machine. the combination with a tool means for rotatably supporting a work piece or gear in cooperative relation with the tool, and means 'for reciprocating one of said parts relatively to the other. of a carriage adjustable relatively to the tool, a shaft on said carriage, a gear wheel on the shaft for driving the gear to be operated upon by the tool, a worm wheel on said shaft. a worm on the carriage cooperating with the worm wheel, a shaft supported independently of the carriage and having the worm turning therewith and adjustable longitudinally thereof, and eccentric sleeve bearings in which the shaft of the carriage turns.

In a gear tooth rounding or chamfering machine, the combination with a rotary tool, and means for reciprocating said tool transversely of its axis of rotation, of a carriage adjustable in the direction parallel to the axis of rotation of the tool, means for rotatably supporting a work piece or gear on the carriage in a position to be operated upon by the tool, a drive gear for rotating tool mounted to reciprocate transversely oi the work piece supported by said carriage, and adjustable thereon relatively to the work supporting means. i 6. In a gear tooth rounding or chamfcring machine, the combination with a rotary tool, and means for rotatably supporting a work piece or gear in a position to be operated upon by said tool, of means for effect ing the adjust nel'it of the work supporting means in the direction parallel to the axis of the tool, means for reciprocating the tool transversely of its axis, a shaft extending in the direction of the axis of the tool, a carriage adjustable relatively to the work supporting means in the direction of the axis of said tool, a worm slidable on the shaft and turning with the latter-and on the carriage, a worm wheel on the carriage, a shaft carryin said worm wheel, and a drive gear carried y the shaftto drive the work piece. 7. In a gear tooth rounding or chamfei iug machine, the combination with a rotary its axis, and means for rotatably support ing a work piece or gear in position to be operated upon by said tool, of means-for elfect ing the adjustmentof the work'supporting means in the direction parallel to the axis of the tool, a drive gear for driving the work piece, and common driving mechanism for the tool and the drive gear embodyin means for reciprocating the tool transverse y of its axis, a shaft, a worm slidable longitudinally of the shaft, a worm wheel meshing with the Worm, and a shaft connected to the worm wheel and to the drive gear and adjustable longitudinally of the wormrcarrying shaft in the direction of means of the tool.

8. In a gear tooth rounding or chamfering machine, the combination with a rotary tool and means for reciprocating said tool transversely of its axis of rotation, of a carriage adjustable longitudinally of the axis of the tool, a member rotatable there- 0",!!"38118 for clamping a work i ee or gear on the rotatable member in position to be operated on by;1he tool, an indexing gear secured to said u ember, and a driving gear adjustable toward andvfrom the axis of the rotating member.

9. In a geartroth rounding or chamfering machine, the combination with a tool, a rotatable work-s1 pporting shaft and means for reciprocating one of said parts relatively to the other, of a carriage adjustable rclatively to the tool and having the \\'o|'k-su|1- porting shaft carried thereby and ]')rojcct-" ing therefrom, means for clamping a work piece or gear on said shaft in a. position to be operated on by the tool, an indexing gear secured to said shaft, a removable bracket for supporting th a free end of the shaft, and

a driving gear fo" the work piece adjustable toward and from the axis of the shaft.

10. In a gear 100th rounding and chamfering machine, the combination with' a frame, means for rotatably supporting a work piece or gear .on said frame, and a rotary tool, of 'a table rotatably adjustable 1 about ayertiisal axis on the frame and supporting the tool for rotation about a hori-- zontal aidsin.a position to operate on a I work piece carried by the supporting means.

11. In a m'achi ae for rounding or chamfering. the teeth 9f gears, the combination with means for r( tatably supporting a 'work piece or gear and 1 tool for cooperation with the work pieceor gear thus supported, of

mechanism for rlciprocating the tool comprising a cam, a pivoted lever having one end cooperating with the cam, a yoke pivotaily supported by the other end of the lever, a screw rod journaled in the yoke,and

a nut carried wi;h the tool and engaging the screw rod;

ARTI] UR H. INGLE. ALPI-l ON SE J. GOSSELIN.

Witnesses:

MAIDA H. Human, Ru'ssmm B Gmrrrri 

